Unfortunately Josue mis-read which theme you are using and with Choices there isn’t a way to add links directly to a toggle or tab. Sorry for the confusion there but in this instance the theme just doesn’t have support for that.

Dear Team – I would also like to insert a link in a “sign-up” form so that the reader agrees to the conditions and can open the page to see what the conditions are. I do not understand how to edit the contact form in “Pages”. What do you mean by “Pages”.